Can someone please give me the real reason why some ref numbers seem to be 'next door' ones? I have 3 families I have researched with these similar but for one digit ref. One has the parents & 2 slightly older chn in one ref & then 2 babies aged 2 wks & 2 yrs in .... 11 27 instead of ....11 26. Then 10 yrs on these 2 chn plus following siblings again in one digit out with no other of the same surname & then after 10 yrs again they all come together with the parents. Seems strange but there must be a simple explanation ! thanks